Four separate dates hang off the September 19, 2026 ACT, and the one that catches people is not the registration deadline. It is the photo. That one falls weeks after registration closes, and missing it voids a seat you have already paid for.

All ACT deadlines expire at 11:59pm Central.

Regular registration has closed, so late registration is the only route left

August 14 was the last date that cost nothing extra. You can still register until September 1, but you pay a late fee to do it.

The decision to make before September 1 is whether a retake is worth a Saturday and a fee at all. ACT's own guidance points at college requirements, scholarship deadlines, your score goals and how prepared you are. The angle we find most useful is narrower: the spread between your English, Math and Reading scores, worked through in should you retake the ACT on September 19.

Registering to keep your options open has a cost. ACT fees are not refunded if you simply decide not to test, and moving to a later date carries its own charge.

Unless you qualify for a fee waiver, which changes the arithmetic but not all of it. ACT's waiver covers the regular registration fee plus the add-on fees for optional Science and Writing, and a student may use two at most. It does not stretch to extras. ACT's own fee-waiver document says a waiver cannot be used for additional fees, and that anything it does not cover has to be paid by card before the registration will submit.

The late fee is one of those extras. Registering now therefore costs a waiver student the late fee out of pocket, which is worth knowing before counting on the waiver to cover this sitting. A used waiver can be carried to a later test date, and the change fee is still yours. Eligibility runs through your school counselor, so ask before you decide a second sitting is unaffordable.

The photo deadline sits weeks after registration closes

Registration closing does not mean you are finished. Your registration is not complete until you upload a photo that meets ACT's requirements, and that deadline sits on September 14, weeks after registration itself closes.

The failure mode is specific: you register in August, you consider the task done, and the photo requirement is sitting in an account you have no reason to open again before the test. Without an approved photo you are not admitted, and the fee is spent.

The requirements and the common rejection reasons are in the ACT photo deadline lands after registration closes.

If you miss September 1, standby is not the same as registering

Standby testing lets you request a seat after late registration closes, through your MyACT account, and you pay for it. Two limits matter. It is available only for paper testing, so it is not a route back in if you were going to test online. And it does not guarantee a seat: centres admit standby students only after every registered student is seated, and only if materials and staff remain.

The standby request runs to the same September 14 date as the photo upload. Treat standby as a fallback that sometimes works, not as an extension of the deadline.

October 6 is when scores start, not when yours arrives

ACT lists October 6 as the initial release for the September test date. Scores are typically available two to four weeks after the test, and not everyone's arrive in the first batch.

Two things delay a full report. Taking Writing means your report can be held until the essay is scored, which is worth knowing if a college deadline sits close behind your test date. That is covered in a pending ACT Writing score can hold back your whole report.

The other is which sections you sat. Science is now optional and is not part of the composite, so if you are deciding whether to add it, the tradeoff is described in the enhanced ACT composite is three sections now.

If September 19 is too soon, the next date is October 17

October 17 has a September 11 regular deadline and a September 29 late deadline. Its initial scores split by format: October 22 for online testing and October 27 on paper. December 12 follows, with a November 6 deadline.

Whether an October test arrives in time depends on the college and on whether you take Writing. ACT advises testing at least two months before your earliest college or scholarship deadline, and it is worth being straight about what that means here: September 19 is 43 days before a November 1 deadline and October 17 is 15, so neither meets that advice. The last date that did was July.

What is left is the margin between score release and deadline. September 19 scores start October 6 in both formats, twenty-six days clear of November 1. October 17 is tighter, and there the format matters: online scores start October 22, ten days clear, and paper starts October 27, five days clear. Each of those can work, and only the September date has real room for anything to go wrong. Check the deadline you are actually applying to.

One thing that makes a second sitting less risky than it looks: many colleges superscore across sittings, combining your best English, Math and Reading. Where they do, the superscore uses your best section results. Colleges still receive the underlying attempts and apply their own policies to them, so this is not a guarantee that a lower section goes unseen. Policies differ by college, so it is worth checking the ones on your list, and how ACT superscoring works now explains what changed when Science left the composite.

Where these dates come from

The registration and late deadlines are from ACT's published 2026-2027 national test date schedule, the photo deadline from its photo submission requirements page, and the score release dates, including the split between online and paper for October 17, from its test scores page. Dates re-checked August 17, 2026; the fee waiver and standby details checked August 10, 2026. Deadlines occasionally move, and ACT's page is the authority rather than this one. If you are reading this close to a deadline, open the schedule yourself and confirm.